This county owned and operated landfill was in violation of the Industrial General Permit benchmark parameters for a variety of contaminants. Clear Water, in conjunction with Geosyntec, designed a treatment system for stormwater runoff at the site. Upon installation of the CESF treatment system with bag filtration, adsorptive media, and UV filtration, analytical testing proved that all contaminants had been reduced below benchmark. This is particularly great not only for the receiving water Pila Creek, and ultimately the Pacific Ocean, but also for the endangered Foothill Yellow-Legged Frog (Rana Boylii) that resides in the Creek.